Concrete form holder and adjuster.



` J. G. HOSMEB.. CONCRETE FORM HOLDER AND ADJUSTEB.

WM/@f J. G. HOSMER.

CONCRETE FORM HOLDER AND ADJUSTER.

JOHN G. HOSMER, OF GRAND JUNCTION, COLORADO.

CONCRETE FORM HOLDER AND ADJUSTER.

Specification of Letters Patent.

Patented Nov. 17', 1908.

Application led August 5, 1907. Serial No. 387,234.

To @ZZ whom it may concern:

Be it known that I, JOHN G. HosMnR, citizen of the United States, residing at Grand Junction, in the county of Mesa and State of Colorado, have invented new and useful Improvements in Concrete Form Holders and Adjusters, of which the following is a speciiication.

My invention pertains to concrete form holders and adjusters-z'- c., apparatus for facilitating the formation of walls of concrete and other plastic material; and it has for its chief robject to obviate the laborious work of building forms of plank` and the waste of same due to warping and splitting.

Other advantageous features of the invention will be fully understood from the following description and claims when the same are read in connection with the drawings, accompanying and forming part of this specification, in which:

Figure l is an elevation of that side of my novel apparatus which when the apparatus is in use is remote from the site of the wall to be constructed. Fig. 2 is a plan of the apparatus. Fig. 3 is a transverse section taken in the plane indicated by the line '3 3 of Fig. 2. Fig. 4 is a perspective view of one of the cam levers hereinafter referred to. Fig. 5 is a transverse section taken in the plane indicated by the line 5-5 of Fig. 2, looking in the direction indicated by the arrow.

Similar letters designate corresponding parts in all of the views of the drawings, referring to which:

A is a base which is not essential, but which may, when deemed expedient, be employed in combination with the apparatus constituting the best practical embodiment of my invention known to me. The said base is designed to be arranged at one side of the site of a prospective wall, and is provided with a longitudinal bar E.

B B are uprights which may rest on the ground, on the base A or on any other suitable support.

C is an end or corner upright, of right angle form in cross-section, stiffened and strengthened in any approved manner as byuprights D and blocks or braces E.

On the end upright D are preferably, though not necessarily, fulcrumed cam levers D to coperate with one facing section. In addition to the uprights B and the end or corner uprights O, my novel apparatus comprises wall-conning members G and H; members of the type represented by G being designed to be arranged at the ends of the apparatus, and members of the type represented by H being designed to rest intermediate of the members G throughout the length of the apparatus.

The member Gr comprises a facing section or wall plate a, preferably of sheet-metal and of any desired area, designed to rest against the wall to be formed, an upright strip b, preferably of angular form in crosssection, fixed to the rear side of the section a and projecting beyond one end thereof to bear against a flange c on the end upright C, an upright CZ arranged in rear of the facing section a, an upright e fixed to the rear side of said section a, horizontal bars f con nected by bolts ZT extending through slots' ZS to the upright Z and disposed at right angles to the facing section a and having slots g for the passage of bolts L through the medium of which the bars are connected to the upright e, blocks Z fixed to the upright c, which is preferably of right angle form in cross-section, adjacent to the upper and lower ends of said upright, cam levers y' arranged at and fulcrumed on the forward side of the upright Z and having heads Ze shaped as shown, and a cam lever Z fulcrumed on the rear side of the upright CZ and arranged when its handle is moved upward to press against the side of the adjacent fixed upright B for a purpose hereinafter set forth. The member H comprises a facing section or wall plate a', uprights b and b2 fixed to the rear side of the facing section; the upright b2 being designed to lap the contiguous end of the facing section a of member G, blocks c" fixed to the said uprights ZJ and b2, uprights (Z, preferably of angular form in cross-section arranged in rear of the facing section a', horizontal bars f connected by bolts (ZT extending through slots ZS to the uprights CZ and having slots g for the passage of the bolts Zz. through which the bars are connected to the uprights b and b2, cam levers y'2 fulcrumed on the forward sides of the uprights cZ and having heads jg, and levers Z of cam-type fulcrumed on the rear sides of the uprights CZ and arranged to bear against the adjacent fixed uprights B. At this point I desire to say that when deemed expedient the cam faces of the levers Z and Z may be serrated to hold the said levers against casual movement when the same are set against the Xed uprights B.

In practice the members G and H are arranged as shown, relative to the remainder of the apparatus-that is to say, the uprights Z and cZ are arranged in front of and are held against rearward movement by the uprights B, while the bars f and f 'lap the said uprights. The facing sections of the members bear only against the concrete that is being formed into a wall.

In the building of a cellar wall but one of my novel devices will be employed; the wall of earth serving to conne and hold the other side of the concrete wall. When, however, a concrete wall is to be built above the ground, two of my novel devices will be employed, one at each side of the site of the wall.

In using my concrete form holder and adjuster, the handles of the levers j and jg are pressed downward as soon as the forms are in position, this in order to hold the members G and H in place while the concrete is being tamped to the height of the same. Then when the concrete or other plastic material is hardened suii'icient to retain its shape and hold its own weight, the levers j and jg are raised and in that way the members G and H will be loosened from the wall. With this done the serrated cam levers Z Z are pushed down which releases the faces of same from the studding B, after which the members released from the studding and wall can be raised until the lower edge of their faces are about one inch below the top of the concrete, hardened as stated. Then the handles of the levers Z Z are raised to clamp the same against the studding and the levers j jg are pressed downward with the result that the members G and H are pushed forward to receive more concrete.

Enough sections of the molds can be used to extend around the wall.

The molds may be and preferably are of steel, so that the wear thereon will be very slight and will last practically a life time.

In addition to the practical advantages hereinbefore ascribed to my novel apparatus it will be noted that the apparatus is simple and inexpensive in construction and as l I l l l l l a whole is well adapted to withstand the rough usage to which devices of corresponding character are ordinarily subjected.

As before stated, the construction herein illustrated and described constitutes the best practical embodiment of my invention of which I am aware, but it is obvious that in the future practice of the invention such changes in the form, construction, and relative arrangement of parts may be made as fairly fall within the scope of my invention as defined in the claims appended.

Having described my invention, what I claim and desire to secure by Letters-Patent, is:

l. In an apparatus for the purpose set forth, the combination of uprights, a facing section having uprights Xed to its rear side, uprights arranged against the first named uprights, bars loosely connecting the uprights on the facing section and the thirrfV named uprights and extending at one side of the first named uprights, cam levers fulcrumed on the third named uprights and arranged to bear against the second named uprights, and clamps connected with the third named uprights and adapted to bear against the opposite side of the first named uprights, with reference to the said bars.

2. In an apparatus for the purpose described, the combination with an end upright, of angular form in cross-section, and

intermediate uprights; of facing sections arranged to be limited in their forward move ments, and having uprights disposed in rear of their major portion, and also having bars connected with said uprights and lapping the intermediate uprights and loosely connected with their said major portions, cam levers fulcrumed on the said rear uprights of the facing sections and arranged to hold said facing sections forward, and cam levers fulcrumed on the said rear uprights of the facing sections and arranged to coperate with the uprights, for the purpose set forth.

JOHN G. HOSMER.

lVitnesses:

HENRY R. RHONE, ROBERT C. IVALKER. 

